A more serious error in my view is: U 505 is definitely fitted with a wooden deck, it's easy to see on the pictures in the museum now.
However, Revell created the kit with obviously the steel deck version, only with the wooden grated covers over the torpedo storage compartments, eight of them, in two varieties. In the painting instructions however they suggest painting the entire deck dark gray: not brown-black (Teerfernis) as would have been appropriate for the wooden deck, or even those stowage compartment lids.
Of course this configuration could have existed just as well, but apparently not on U 505. So either live with the error, or replace the deck with a wooden version, maybe Nautilus will come to the rescue? Or change the identity of your boat to one applicable to this configuration.
I think the error arises from the ancestry of the kit: Tehnoart from Russia sells a beautiful resin Typ IXC in this scale,
http://www.tehnoart.eu/u-boot-ix-c-u-505-.html, in exactly the same configuration. Revell have admitted to me they have used this as a starting point for their kit, which is very similar into the beautiful details. Only one error from the Technoart kit was not copied: the door on the front of the conning tower was on the wrong side, Revell got that right.
"I've heard there's a wicked war a-blazing, and the taste of war I know so very well
Even now I see the foreign flag a-raising, their guns on fire as we sail into hell"
Roger Whittaker +9/13/2023